Arc-light hanger-board.



No. 698,792. Patented Apr. 29, |902.

H. BUCK & W. H. STRIPPY.

ARC LIGHT HANGER BOARD.

' (Application led June 15, 1901.) (No Model.)

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UNTTnn STATns PATENT Trient.

HIRAM M. BUCK AND VILLIAM H. STRIPPY, OF BALTIMORE, MARYLAND.

ARC-LIGHT HANGER-BOARD.

SPECIFICATION forming part of Letters Patent No. 698,792, dated April29, 1902.

Application tiled .Tune 15, 1901.

To @ZZ whom, it 'may concern.-

Be it known that we, HIRAM M. BUCK and WILLTAM H. STRIPPY, citizens ofthe United States, residing at Baltimore, in the State of Maryland, haveinvented new and useful lmprovements in Arc-Light Hanger-Boards, ofwhich the following is a specification.

Thisinvention relates to arc-light hangerboards; and the principalobject ot' the in vention is to provide, in connection with ahangerboard for electric-arc lights, improved means whereby in case otaccident to a single lamp on a circuit only such single lamp will bedisabled and the other lampsin the samecircuit will not be interferedwith, as is the case at present. By a mechanical arrangement hereinafterset forth, and illustrated in the accompanying drawings, when anyparticular lamp becomes disabled or disconnected, either partly orwholly, said lamp is automatically cut out and the current is caused topass through short-circuit wires, proceeding around and not through thelamp, thus maintaining the continuity of the current and supplying thenecessary electrical energy to the remaining lamps in the circuit.

With the above general objects in View the invention consists in thenovel construction, combination, and arrangement of parts hereinafterfully described, illustrated, and claimed.

In the accompanying drawings, Figure 1 is a sectional view of ahanger-board, showing the lamp-hanging device and circuit elementsconnected therewith. Fig. 2 is a top plan view of the board. v Y

Similar numerals of reference designate cor` responding parts in bothfigures of the drawings. Y f

In carrying out the present invention wev employ a hanger-board 10, ofany suitable non-conducting material, with or without a central aperture11 for the reception of the upper portion of an electric-arc lamp12,which is hung beneath the board, as shown in Fig. 1, being for-thatpurpose provided with oppositely-located hooks 13.

The lamp is supportedt'hrough the medium of the hooks 13 by means ofhanger-rods 14, which extend upward through openings 15 in the hanger-board and connect pivotally to the shorter arm 16 of a pair ofcounterbalauceserial No. 64,718. un model.)

levers 17 and 18, fulcrumed intermediate of their ends at 19 onbinding-posts 2O and 21.

The counterbalance-levers 17 aud 18 are arranged above thehanger-board,and when either one of said levers is relieved of theweight of the lamp the longer arm of said lever in falling isbroughtinto engagement with a contact-22, consisting, preferably, ofametal plate secured to the upper surface of theL board 10. It will beunderstood that two contacis 22 and 23 are employed and arranged,respectively, in thepaths of the longer arms of thecounterbalance-levers 17 and 18. The binding-posts 2O and 21 extendbeneath and project downward from the lower surface of the hanger-board10, where they are adapted to receive the circuit-wires 24 and 25. Fromthe contact 23 a by-wire or short-circuit Wire 26 extends to theoppositely-located bindingpost 21, while a like wire 27 extends from theother contact 22 to the'binding-post 20. The longer arms 'of thecounterbalance-levers are also preferably provided with weights 2S, so

Vas to insure the prompt falling of the levers .cir'cuit wire 27,Ybinding-post 2,0,Y and circuitwire v25. Should the lamp becomedisconnected at the opposite side, then the circuit willV be as follows;circuit-wire25, bindingpost `20, 1ever"17,"contact 23, wire 26,bindpost21, and circuit-wire 24. Should the lamp become entirely disconnectedfrom both of the hanger-rods, then the circuit will pass through thewire 24, binding-post 21, Wire 26, contact 23, lever 17, binding-post20, and circuit-wire 25.

From the foregoing description it will be seen that when the lampbecomes disconnected, detached, or disabled such lamp will beautomatically cut out of the circuit and will IOO therefore notinterfere with the other lamps in the circuit. A switch of any ordinarydesign may be attached to the board for the purpose of cuttingr ont thelamp while repairing or changingr the same and without intertering,`with the working of the other parts of the device.

XVe do not desire to be limited to the details of construction andarrangement hereinabove set forth and accordingly reserve the right tochange, modify, or Vary the construction within the scope of theappended claims. For instance, any kind of circuit-closer may he used inplace of the plates 2:3 and 23.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, is-

l. An are-light hanger-hoard comprising a pair of connterbalance-levers,binding-posts on which' the connterbalance-levers are pivoted and withwhich they are electrically con# nected, suspending,Y means whereby alamp is supported by the connterbalanee-levers, andelectrically-connected contacts arranged in the paths of movement of thelonger arms ot the connterbalance-levers.

2. An arc-light hanger-board comprising a pair of counterhalance-levers,circuit-wires, binding-posts on which the Omnitel-balancelevers arepivoted and associated with the circuit-wires and electrically7connected with the @eaves connterbalance-levers and contacts arranged inthe paths of movement ol the longer arms of the counterbalance-leversand with which the binding-posts are also electrically connected, andlamp-snspendine,f means connected with the shorter arms ol. thecounter-balance-levers in such a manner as to normally hold the longerarms of the latter out of engagement with the contacts.

An arc-light hanger-board comprising circuit-wires, oppositely-locatedbinding; posts for the circuit-wires, oppositely-loeatedconnterbalance-levers fulern in ed on the binding-posts and electricallyassociated therewith, contacts arranged in the paths of movement of thelonger arms of the connterbalance-levers when relieved of the Weightofthe lamp, short-circuit wires connecting the contacts with thebinding-posts, and lamp-hanger rods connected with the shorter arms ofthe connterhalance-leversin snch a manner as to hold the longer arms ofthe latter out of enlsagement with the contacts when the weight of thelamp is supported thereon.

In testimony whereof we allix our signatures in presence of twowitnesses.

IHRAM M. BUCK. XVILLIAM Il. STRIPPY.

Vitnesses:

EDWARD G. TA1-1D, JOHN W. ZUCK.

